Sliding trolley



G. S. MOORE SLIDING TROLLEY Jan. 13, 1931.

Filed Dec. 31, 1929 2 Sheets-Sheet 1 gwuentox iles SMoore Jan. 13, 1931.

s. MOORE 1,789,250

SLIDING TROLLEY Filed Dec. 31, 1929 2 Sheets-Sheet 2 gnoeniot(filesSMoore 2o tionin reverse movement,

section showing- Patented Jan. 13, 1 931 UNITED, STATES GILES s'.Moonnor' mnmnnroms, Inn- A A SLIDING mnontnir; I

I 1 Application filed December 31 ,'1929.; Se1iia1 No.j4i7,713-

- This invention relates to a sliding trolley or shoe for electrictrains and cars and an object of the invention is to provlde a trolley 1-shoe wheel which will provide a large surface contact on'the trolley toprevent burng out the shoe and thus to prolongv its life. I V H J j I Afurther object is toprovide a novel arrangement whereby in backing upthe shoe 10 may be kept in long line contact with the p trolley.

Referring to the accompanying drawings which are made apart hereof andon which similar reference characters indicate similar -5 parts,

I 'liigure' leis a side elevation showing the' position of the devicewhen the car is in forward movement,

FIDUI'G 2, a side elevation showing line 4 -4 of Figure harp which isattached to the upper end of a I trolley pole. This harp has'a pair offorks 11 and 12 in which a spideror frame 13is 14;, and is permitted anoscillating motion which motion islimited by stops 15 and 16* onthe-spider which engage the harp at corresponding steps 17 and 18. Acontact shoe 2 e '19 has a depending lug 20 which is pivoted at 21 to calug 22 on a short lever 23 which is pivoted .on thepin 14. The arm 22 towhich the shoe is pivoted is permitted an oscillatory movement;

When the car is traveling forward, friction in the shoe 19 will'hold itto the position I '4L5fSl1OWIllI1 Figure 3. When in this position toonly a single point on the wheel and onthe The shoe 19 is grooved asshown at 26 to receive a trolley wire 27 wire' This tends to burnboththeiwirje and e thewheel at starting of the car. the long linecontact furnished by device the danger "of 1 burning the surface "ofthe: shoe A and of thefwire is avoided? Inord'er tofin sure a good'electrical contact-' between the shoe; 19 and thei,harp a flexiblecable 29 is" -se ured=-at 3O totheshoe'and at 31 to the 1.

harp. For providing contact in ireverse Q motion of the'car acontactbelt 31 is mount-F6 ed on rollers '32 and '33 which rollers are pivotedon pins 34 and 35 mountedin the rear of the spider13'. v

In operation when going vforward the harp 10 will be biasedin thedirection'of the e arrow 36 in Fi'gurel to hold the shoe 19 in contactwith-the trolley, and friction on the shoe will hold the shoe in therear-position with the arm 22 toward the rear. When the car is reversedthe shoe 19. will slide for-" ward, at which time the, spider 13 "willfurther swing on its 'pivot 14 to the position shown in Figure 2'. Whenin-this position the'trolley 27 will ride on the top'of the belt 31. Thetension of the harp 10 will 2 still be in the directionof the arrow- 86but the reverse motion of the car will hold the spider in the positionshown in Figure 2. The belt 31 provides a long line contact with thetrolley 27 and provides a rolling contion'but does away with thedangerofburning out portions of the trolley shoe,or burning the trolley wire,such as occurred with V, I trolleys having a single trolley wheel whiart 7 g in the thatvarious changes may be made in my device withoutdeparting from the spirit to of the invention and therefore I do notlimit myself. towhat is shown in the drawings I itact as well, This notonly eliminates fric- H mounted. The spider 13 is pivoted on a pine anddescribed in the specification, but only e as indicated in the appendedclaims.

Having thus fully described my said invention,'whatIclaim as new anddesire to secureby Letters Patent, 7 I c 7 -1.'A sliding trolley"comprising a harp,

a shaft, a frame pivoted on said shaft, a link pivoted to said shaft, asliding contact shoe pivoted to said link and normally resting on saidframe at the rear thereof when said vtrolley is moving in a forwarddirection and adapted to rock to a forward posi- 5 tion when the saidtrolley is movingin the reverse direction thereby changing the center oftorque to cause the frame to rotate on said shaft, substantially as setforth. V

2. A sliding trolley comprising a harp, 10 a shaft, a framepivoted onsaid shaftfa link pivoted to said shaft, asliding'contact shoe pivotedto said, link and adapted to sliding movement with respect to said-frameto shift the center of the torques rolling t 15 contact member adjacentsaid sliding'shoe and adapted to swing intox contacting position by theshifting of said sliding shoe, substantially as set forth. V In Witnesswhereof, I have hereunto set my hand-andseal atIndianapolis, Indiana, 1V

" this 27th day of December, A., D. nineteen v V h d e sl w n y n a. r

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